文献类型：期刊文献

英文题名：An Analysis of the Tradeoff Between the Energy and Spectrum Efficiencies in an Uplink Massive MIMO-OFDM System

作者：Zhao, Long[1];Li, Ke[2];Zheng, Kan[1];Ahmad, M. Omair[3]

第一作者：Zhao, Long

通讯作者：Zhao, L[1]

机构：[1]Beijing Univ Posts & Telecommun, Minist Educ, Key Lab Univ Wireless Commun, Wireless Signal Proc & Network Lab, Beijing 100876, Peoples R China;[2]Beijing Union Univ, Coll Informat Technol, Beijing 100101, Peoples R China;[3]Concordia Univ, Dept Elect & Comp Engn, Montreal, PQ H3G 1M8, Canada

第一机构：Beijing Univ Posts & Telecommun, Minist Educ, Key Lab Univ Wireless Commun, Wireless Signal Proc & Network Lab, Beijing 100876, Peoples R China

通讯机构：[1]corresponding author), Beijing Univ Posts & Telecommun, Minist Educ, Key Lab Univ Wireless Commun, Wireless Signal Proc & Network Lab, Beijing 100876, Peoples R China.

年份：2015

卷号：62

期号：3

起止页码：291-295

外文期刊名：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS

收录：;EI(收录号：20151000616552);Scopus(收录号：2-s2.0-84924188075);WOS:【SCI-EXPANDED(收录号:WOS:000350884900016)】；

基金：This work was supported by the Program for New Century Excellent Talents in University under Grant NCET-11-0600, by the National High Technology Research and Development Program of China under Grant 2014AA01A705, and by the National Key Technology R&D Program of China under Grant 2013ZX03001003. This brief was recommended by Associate Editor J. G. Delgado-Frias.

语种：英文

外文关键词：Energy efficiency (EE); massive multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM); maximum ratio combination (MRC); spectrum efficiency (SE); zero-forcing (ZF)

摘要：This brief mainly investigates energy efficiency (EE) and spectrum efficiency (SE) for the uplink massive multiple-input-multiple-output orthogonal frequency-division multiplexing system in a single-cell environment. An approximate SE expression is first derived by employing the maximum ratio combination or zero-forcing detection at the base station. Then, the theoretical tradeoff between EE and SE is established after introducing a realistic power consumption model in consideration of both the radiated power and the circuit power. Based on the tradeoff, the optimal EE with respect to SE is derived using the convex optimization theory. Results show that the optimal EE increases by deploying a suitable number of antennas, multiplexing a reasonable number of users, expanding the system bandwidth, or shrinking the cell radius. Partly different from the EE, the SE corresponding to the optimal EE can be improved by increasing the number of antennas, multiplexing a rational number of users, narrowing the system bandwidth, or shrinking the cell radius.